Oh sweetheart... You're about to have that baby! What kind of man is he to send you out when you're about to give birth? I think you deserve to be home, regardless of him needing "space", whatever that means. I mean, you're married to him. Him needing space doesn't mean kicking you out of it. He needs to sort his drama out, because putting this on you isn't right, especially not right now. You deserve to be home, honey.
This reminds me of when I first got married. My husband and I had a huge fight and I said something to the effect of "go sleep on the couch." my husband looked at me like i'd lost my mind and said "no, this is my bed just as much as it's yours. If you have a problem with it, then *you* sleep on the couch." and he was absolutely right. So now, when we fight, we sleep as faaaar apart as possible, but we still sleep together. We both deserve to be in our own bed. (if that makes any sense.) I hope everything works out! You definitely don't need this stress right now.